The SortType property specifies the way how a column is sorted. By default, the column's SortType is String. Use the SortType property to specifies how the control will sort the column. Use the Sort method to sort a column. Use the SingleSort property to specify whether the control supports sorting by single or multiple columns. The SortOrder property determines the column's sort order. The Sort event is fired when the user sorts a column. The SortPosition property changes the position of the column in the sorting columns collection.